Datasheet

ADF4360-8
Rev. A | Page 4 of 24
Parameter B Version Unit Conditions/Comments
Harmonic Content (Third) −21 dBc typ
Output Power
5, 7
−9/0 dBm typ Using tuned load, programmable in 3 dB steps; see Table 7
Output Power
5, 8
−14/−9 dBm typ Using 50 Ω resistors to V
VCO
, programmable in 3 dB steps; see Table 7
Output Power Variation ±3 dB typ
VCO Tuning Range 1.25/2.5 V min/max
NOISE CHARACTERISTICS
5
VCO Phase Noise Performance
9
−120 dBc/Hz typ @ 100 kHz offset from carrier
−139 dBc/Hz typ @ 800 kHz offset from carrier
−140 dBc/Hz typ @ 3 MHz offset from carrier
−142 dBc/Hz typ @ 10 MHz offset from carrier
Synthesizer Phase Noise Floor
10
−160 dBc/Hz typ @ 200 kHz PFD frequency
−150 dBc/Hz typ @ 1 MHz PFD frequency
−142 dBc/Hz typ @ 8 MHz PFD frequency
Phase Noise Figure of Merit
10
−215 dBc/Hz typ
In-Band Phase Noise
11, 12
−102 dBc/Hz typ @ 1 kHz offset from carrier
RMS Integrated Phase Error
13
0.09 Degrees typ 100 Hz to 100 kHz
Spurious Signals due to PFD
Frequency
12, 14
−75 dBc typ
Level of Unlocked Signal with
MTLD Enabled
−70 dBm typ
1
Operating temperature range is –40°C to +85°C.
2
Guaranteed by design. Sample tested to ensure compliance.
3
I
CP
is internally modified to maintain constant loop gain over the frequency range.
4
T
A
= 25°C; AV
DD
= DV
DD
= V
VCO
= 3.3 V.
5
Unless otherwise stated, these characteristics are guaranteed for VCO core power = 5 mA. L1, L2 = 270 nH, 470 Ω resistors to GND in parallel with L1, L2.
6
Jumping from 88 MHz to 108 MHz. PFD frequency = 200 kHz; loop bandwidth = 10 kHz.
7
For more detail on using tuned loads, see the Output Matching section.
8
Using 50 Ω resistors to V
VCO
, into a 50 Ω load.
9
The noise of the VCO is measured in open-loop conditions.
10
The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO and subtracting 20 log N (where N is the N divider value). The
phase noise figure of merit subtracts 10 log (PFD frequency).
11
The phase noise is measured with the EVAL-ADF4360-xEB1 Evaluation Board and the HP 8562E Spectrum Analyzer. The Spectrum Analyzer provides the REF
IN
for the
synthesizer; offset frequency = 1 kHz.
12
f
REFIN
= 10 MHz; f
PFD
= 200 kHz; N = 1000; loop B/W = 10 kHz.
13
f
REFIN
= 10 MHz; f
PFD
= 1 MHz; N = 120; loop B/W = 100 kHz.
14
The spurious signals are measured with the EVAL-ADF4360-xEB1 Evaluation Board and the HP 8562E Spectrum Analyzer. The Spectrum Analyzer provides the REF
IN
for the synthesizer; f
REFOUT
= 10 MHz @ 0 dBm.